CN113279272A - Post acid-supplementing dyeing method and textile dyed by same - Google Patents
Post acid-supplementing dyeing method and textile dyed by same Download PDFInfo
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- CN113279272A CN113279272A CN202110587026.0A CN202110587026A CN113279272A CN 113279272 A CN113279272 A CN 113279272A CN 202110587026 A CN202110587026 A CN 202110587026A CN 113279272 A CN113279272 A CN 113279272A
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- 238000004043 dyeing Methods 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 54
- 239000004753 textile Substances 0.000 title claims abstract description 48
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 72
- 229960000583 acetic acid Drugs 0.000 claims abstract description 36
- 239000012362 glacial acetic acid Substances 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000000975 dye Substances 0.000 claims description 42
- 239000004744 fabric Substances 0.000 claims description 36
- 238000004321 preservation Methods 0.000 claims description 30
- 239000004677 Nylon Substances 0.000 claims description 18
- 229920001778 nylon Polymers 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 6
- 239000000980 acid dye Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000835 fiber Substances 0.000 abstract description 27
- 239000002253 acid Substances 0.000 abstract description 11
- 239000012466 permeate Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 34
- 230000008569 process Effects 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 11
- 238000010008 shearing Methods 0.000 description 6
- 241000519995 Stachys sylvatica Species 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 239000000986 disperse dye Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 229920006052 Chinlon® Polymers 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920004933 Terylene® Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/0032—Determining dye recipes and dyeing parameters; Colour matching or monitoring
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/39—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using acid dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/653—Nitrogen-free carboxylic acids or their salts
- D06P1/6533—Aliphatic, araliphatic or cycloaliphatic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/24—Polyamides; Polyurethanes
- D06P3/241—Polyamides; Polyurethanes using acid dyes
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Abstract
The invention relates to a post acid-supplementing dyeing method and a textile dyed by the method. The method of the invention comprises the following steps: putting the textile to be dyed into a dyeing device; adding a leveling agent at the temperature of 35-40 ℃, and adding a dye at the speed of 18-22L/min; starting at 35-40 ℃, heating to 90-100 ℃ at the speed of 1.0-1.5 ℃/min, and preserving heat for 15-20 min; cooling to 38-45 ℃ at the speed of 2.0-4.0 ℃/min, and adding glacial acetic acid solution at the speed of 18-22L/min; then, heating to 98-100 ℃ at the speed of 1.0-1.5 ℃/min, and preserving heat for 15-20 min; and finally, cooling to 70-80 ℃ at the speed of 2.0-4.0 ℃/min, and finishing dyeing. According to the post acid-supplementing dyeing method, the dyeing speed of the dye at the early stage is reduced in a post acid-supplementing mode, sufficient time is provided before adding acid to enable the dye to fully permeate into the internal fiber, the internal fiber can absorb enough dye, the color of the dyed internal fiber and the color of the dyed external fiber are basically consistent, and the problem that the white color of the textile to be dyed is exposed when the textile is not dyed is effectively solved.
Description
Technical Field
The invention belongs to the technical field of textile dyeing and finishing, and particularly relates to a post acid-supplementing dyeing method and a textile dyed by the same.
Background
At present, the folded yarn is widely applied to lace products due to the unique three-dimensional effect, and is particularly widely applied to outer garment laces. However, because the strands are thick and tight, they tend to be impervious, often with the outer surface fibers colored, but the inner core fibers not colored. Also, after dyeing of different colors, the degree of non-strike-through is different, for example, a light color, a medium color, and a dark color are less noticeable, but a dark color is more noticeable. When the lace fabric with the folded yarns is pulled open by a hot air tentering setting machine after being dyed, the problem of no dye penetration is exposed, white spots appear on the fabric surface, and the quality of the fabric surface is directly influenced; or when the lace fabric with the folded yarns is made into ready-made clothes, the problems that the cut part of the section is exposed to white due to the fact that the fabric is not dyed thoroughly or the folded yarns are exposed to white due to friction in the wearing process are caused, and the like, so that the aesthetic property and the quality of the clothes are seriously affected.
Disclosure of Invention
Aiming at the defects in the prior art, a post acid-supplementing dyeing method and a textile dyed by the method are needed. According to the method, the dyeing speed of the dye at the early stage is reduced by a mode of adding acid later, sufficient time is provided before adding acid to enable the dye to fully permeate into the internal fibers of the folded yarn, the internal fibers can absorb sufficient dye, the colors of the dyed internal and external fibers are basically consistent, and therefore the problem that the folded yarn and other dense structures are not dyed and can be exposed to white is effectively solved.
To achieve the above object, a first aspect of the present invention provides a post-acid-replenishing dyeing method, comprising the steps of:
(1) putting the textile to be dyed into a dyeing device;
(2) adding a leveling agent at the temperature of 35-40 ℃, and adding a dye at the speed of 18-22L/min;
(3) starting at 35-40 ℃, heating to 90-100 ℃ at the speed of 1.0-1.5 ℃/min, and preserving heat for 15-20 min;
(4) after the heat preservation is finished, cooling to 38-45 ℃ at the speed of 2.0-4.0 ℃/min, and then adding a glacial acetic acid solution at the speed of 18-22L/min;
(5) after the glacial acetic acid solution is added, heating to 98-100 ℃ at the speed of 1.0-1.5 ℃/min, and keeping the temperature for 15-20 min;
(6) and after the heat preservation is finished, cooling to 70-80 ℃ at the speed of 2.0-4.0 ℃/min, and finishing the dyeing.
As an embodiment of the present invention, the post acid-replenishing dyeing method specifically includes the steps of:
(1) putting the textile to be dyed into a dyeing device;
(2) adding a leveling agent at 38 ℃, and adding a dye at the speed of 20L/min;
(3) starting at 38 ℃, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(4) after the heat preservation is finished, cooling to 38 ℃ at the speed of 3.0 ℃/min, and then adding glacial acetic acid solution at the speed of 20L/min;
(5) after the glacial acetic acid solution is added, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(6) and after the heat preservation is finished, cooling to 80 ℃ at the speed of 3.0 ℃/min, and finishing the dyeing.
As an embodiment of the invention, in step (1), the textile to be dyed is lace fabric with folded yarn or lace garment with folded yarn.
As an embodiment of the invention, the textile to be dyed comprises nylon.
As an embodiment of the present invention, in the step (2), the leveling agent is an enriella chemical acidic leveling agent DK-250 (available from enriella chemical co., ltd, hangzhou) or a deltoid chemical acidic leveling agent TBW-95 (available from new deltoid chemical co., ltd, njin, fujian).
In one embodiment of the invention, in the step (2), the addition amount of the leveling agent is 0.5-1.5 g/L.
As an embodiment of the present invention, in the step (2), the dye is an acid dye.
In step (2), the dye is added in an amount of 1-5% by mass of the textile to be dyed.
As an embodiment of the present invention, in the step (4), the glacial acetic acid solution is glacial acetic acid and water is added according to a ratio of 1: 10, and the adding amount of the glacial acetic acid solution is 0.75-1.5 g/L.
In a second aspect of the invention there is provided a dyed textile dyed by the post-acid-filling dyeing process of the first aspect of the invention.
Different from the prior art, the technical scheme provides a post acid-supplementing dyeing method, the dye-uptake speed in the early stage is reduced by a post acid-supplementing mode, sufficient time is provided before adding acid to enable the dye to fully permeate into the internal fiber of the textile to be dyed, the internal fiber can absorb the sufficient dye, and the colors of the dyed internal fiber and the dyed external fiber are basically consistent. Meanwhile, the heating speed, the heat preservation temperature, the heat preservation time and the like in the dyeing process are optimized, so that the phenomenon that the white color of the textile to be dyed with compact structures such as folded yarns cannot be exposed when the textile is dyed.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the technical means in detail, the following detailed description is given with reference to specific embodiments. The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
In embodiments of the present invention, the term "liquor ratio" refers to the weight ratio of liquor to textile.
In the prior art, the dyeing method of lace with strand yarn is usually to add glacial acetic acid solution at the same time of adding dye. This way of feeding presents the following drawbacks: after the glacial acetic acid solution is added into the dye vat, the pH value of the dye solution in the dye vat is suddenly reduced, the concentration of the dye in the dye vat is very high, and the phenomenon that surface fibers, net bottom yarns and figured yarns of the folded yarns and internal fibers of the folded yarns compete with each other for dyeing is further caused. The results of the counter-staining were: fibers, net bottom yarns, flower yarns and dye liquor on the surface of the plied yarns are in full contact, so that the dye is quickly dyed, much dye is dyed, and the color is dark; because the strand yarn is thick and compact in structure, a certain time is needed for dye liquor to permeate into the strand yarn, fibers in the strand yarn are not fully contacted with the dye liquor, the dye is slowly dyed, the color yield is low, the color is light or basically not colored, and the phenomenon that the color of the fibers in the strand yarn is lighter than that of the fibers on the outer surface of the strand yarn and the fibers are not dyed thoroughly is caused. When the lace fabric with the folded yarns is pulled open by a hot air tentering setting machine after being dyed, the white of the star points can be exposed on the fabric surface, and the quality of the fabric surface is directly influenced. Or when the lace fabric with the folded yarns is made into ready-made clothes, the problems that the cut part of the section is exposed to white due to the fact that the fabric is not dyed thoroughly or the folded yarns are exposed to white due to friction in the wearing process are caused, and the like, so that the aesthetic property and the quality of the clothes are seriously affected.
In view of the defects in the prior art, in a first aspect of the present invention, there is provided a post acid-replenishing dyeing method, comprising the following steps:
(1) putting the textile to be dyed into a dyeing device;
(2) adding a leveling agent at the temperature of 35-40 ℃, and adding a dye at the speed of 18-22L/min;
(3) starting at 35-40 ℃, heating to 90-100 ℃ at the speed of 1.0-1.5 ℃/min, and preserving heat for 15-20 min;
(4) after the heat preservation is finished, cooling to 38-45 ℃ at the speed of 2.0-4.0 ℃/min, and then adding a glacial acetic acid solution at the speed of 18-22L/min;
(5) after the glacial acetic acid solution is added, heating to 98-100 ℃ at the speed of 1.0-1.5 ℃/min, and keeping the temperature for 15-20 min;
(6) and after the heat preservation is finished, cooling to 70-80 ℃ at the speed of 2.0-4.0 ℃/min, and finishing the dyeing.
Different from the prior art, the technical scheme provides a post acid-supplementing dyeing method, the dye-uptake speed in the early stage is reduced by a post acid-supplementing mode, sufficient time is provided before adding acid to enable the dye to fully permeate into the internal fiber of the textile to be dyed, the internal fiber can absorb the sufficient dye, and the colors of the dyed internal fiber and the dyed external fiber are basically consistent. Meanwhile, the heating speed, the heat preservation temperature, the heat preservation time and the like in the dyeing process are optimized, so that the phenomenon that the white color of the textile to be dyed with compact structures such as folded yarns cannot be exposed when the textile is dyed.
In the process optimization process of the post acid-supplementing dyeing method, the following process characteristics are found:
1. in the steps (2) and (3), when the initial temperature is 35-40 ℃, the dyeing effect of the final compound yarn is optimal; at initial temperatures above 40 ℃, the dye-through effect begins to decrease.
2. In the step (3), when the temperature rising speed is less than 1.5 ℃/min, the dyeing through effect of the folded yarn is optimal, and when the temperature rising speed is more than 1.5 ℃/min, the dyeing through effect begins to be reduced; when the heat preservation temperature is higher than 90 ℃, the dyeing through effect of the compound yarn is optimal, and when the heat preservation temperature is lower than 90 ℃, the dyeing through effect begins to be reduced; when the heat preservation time is longer than 15min, the dyeing through effect of the folded yarn is optimal, and when the heat preservation time is shorter than 15min, the dyeing through effect begins to decline.
3. In the step (4), when the cooling speed is less than 4.0 ℃/min, the dyeing through effect of the folded yarn is optimal, and when the cooling speed is more than 4.0 ℃/min, the dyeing through effect begins to be reduced; when the target temperature of temperature reduction is lower than 45 ℃, the dyeing through effect of the folded yarn is optimal, and when the target temperature of temperature reduction is higher than 45 ℃, the dyeing through effect begins to decrease; when the feeding speed of the glacial acetic acid solution is less than 22L/min, the dyeing effect of the folded yarn is optimal, and when the feeding speed of the glacial acetic acid solution is more than 22L/min, the dyeing effect begins to decline.
4. In the step (5), when the temperature rising speed is less than 1.5 ℃/min, the dyeing through effect of the folded yarn is optimal, and when the temperature rising speed is more than 1.5 ℃/min, the dyeing through effect begins to be reduced; when the heat preservation temperature is higher than 98 ℃, the dyeing through effect of the folded yarn is optimal, and when the heat preservation temperature is lower than 98 ℃, the dyeing through effect begins to be reduced; when the heat preservation time is longer than 15min, the dyeing through effect of the folded yarn is optimal, and when the heat preservation time is shorter than 15min, the dyeing through effect begins to decline.
5. In the step (6), when the cooling speed is less than 4.0 ℃/min, the dyeing through effect of the folded yarn is optimal, and when the cooling speed is more than 4.0 ℃/min, the dyeing through effect begins to be reduced; when the target temperature of temperature reduction is lower than 80 ℃, the dyeing effect of the folded yarn is optimal, and when the target temperature of temperature reduction is higher than 80 ℃, the dyeing effect is slightly reduced.
In general, the above-described process features are mainly characterized in that the lower the temperature of the feed, the slower the feed rate, the slower the temperature rise/fall rate, and the longer the holding time, the more helpful the strand is to be thoroughly dyed.
Therefore, after comprehensively considering the dyeing through effect, the dyeing efficiency and the process cost of the yarn, in a further embodiment, the post acid-supplementing dyeing method specifically comprises the following steps:
(1) putting the textile to be dyed into a dyeing device;
(2) adding a leveling agent at 38 ℃, and adding a dye at the speed of 20L/min;
(3) starting at 38 ℃, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(4) after the heat preservation is finished, cooling to 38 ℃ at the speed of 3.0 ℃/min, and then adding glacial acetic acid solution at the speed of 20L/min;
(5) after the glacial acetic acid solution is added, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(6) and after the heat preservation is finished, cooling to 80 ℃ at the speed of 3.0 ℃/min, and finishing the dyeing.
In a further embodiment, in step (1), the textile to be dyed is lace fabric with a strand or lace garment with a strand.
In a further embodiment, the material of the textile to be dyed comprises nylon. For example, the textile to be dyed can be a full nylon lace fabric (or ready-made garment) with a folded yarn, or can be a nylon lace fabric (or ready-made garment) with a folded yarn, and the folded yarn component is nylon.
It should be noted that, because the invention provides a post acid-supplementing dyeing method, it is not suitable for lace of cotton, because the dyeing process of cotton strand adopts alkali rather than acid; the polyester yarn can be applied to the folded yarn made of the polyester material, but the dyeing effect is poor.
In a further embodiment, in step (2), the leveling agent is an en siei chemical acidic leveling agent DK-250 (available from en siei chemical limited, hangzhou) or a de mei chemical acidic leveling agent TBW-95 (available from new de mei chemical limited, njn, fujian).
In a further embodiment, in the step (2), the addition amount of the leveling agent is 0.5-1.5 g/L.
In a further embodiment, in step (2), the dye is an acid dye.
In the post-acid-replenishing dyeing method of the present invention, dyeing using a reactive dye requires alkaline conditions, and therefore is not suitable for the method of the present invention. If the disperse dye is adopted, the disperse dye is a granular dye, and is generally only used on the fabric made of the terylene material, a small amount of the disperse dye is used on the fabric made of the chinlon material, and the disperse dye used on the chinlon material is only suitable for dyeing light color, so that the condition that the folded yarn is not dyed well is not obvious when the light color is dyed. Thus, in the post-acid-replenishing dyeing method of the present invention, the dye is an acid dye.
In a further embodiment, in step (2), the dye is added in an amount of 1% to 5% by mass of the textile to be dyed.
In a further embodiment, in step (4), the glacial acetic acid solution is glacial acetic acid with water in a ratio of 1: 10, and the adding amount of the glacial acetic acid solution is 0.75-1.5 g/L. The pH value of the dye solution is adjusted to 4.5-5.0 by adding 0.75-1.5 g/L glacial acetic acid solution.
In a second aspect of the invention there is provided a dyed textile dyed by the post-acid-filling dyeing process of the first aspect of the invention. The dyed textile is lace fabric with folded yarns or lace ready-made clothes with folded yarns.
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Materials, reagents, equipment and the like used in the embodiments of the present invention are commercially available unless otherwise specified; the adopted process methods, conditions and the like are conventional methods and conditions unless specified otherwise.
In the specific embodiment of the invention, after dyeing, the method further comprises the following post-treatment steps of washing, color fixing, dewatering, cloth spreading, high-temperature tentering and setting and the like which are sequentially carried out. These post-treatment steps are conventional techniques in the art, and can be adjusted according to the specific production requirements of the fabric, so the specific steps and conditions thereof are not described herein.
In the specific embodiment of the present invention, the full nylon lace fabric with the strand is used as the textile to be dyed after acid-replenishing dyeing for exemplary illustration, but the embodiment of the present invention is not limited thereto.
In the embodiment of the present invention, a color formula of navy blue is taken as an exemplary illustration, but is not intended to limit the scope of the present invention.
TABLE 1 color formulation table for navy blue
Example 1 post acid-replenishing dyeing of full Nylon lace with Strand yarn
The embodiment provides a post acid-supplementing dyeing method, which comprises the following steps:
(1) putting a textile to be dyed (a full nylon lace fabric with folded yarns) into a dyeing device;
(2) adding an acid leveling agent TBW-95 at 38 ℃, and adding the prepared dye at the speed of 20L/min;
(3) starting at 38 ℃, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(4) after the heat preservation is finished, cooling to 38 ℃ at the speed of 3.0 ℃/min, and then adding glacial acetic acid solution C03 at the speed of 20L/min;
(5) after the glacial acetic acid solution is added, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(6) after the heat preservation is finished, the temperature is reduced to 80 ℃ at the speed of 3.0 ℃/min, and after the dyeing is finished, the dyed textile (the full nylon lace fabric with the folded yarn) is obtained, and the color matching is carried out in a shearing mode.
Comparative example 1
This comparative example provides a dyeing process comprising the steps of:
(1) putting a textile to be dyed (a full nylon lace fabric with folded yarns) into a dyeing device;
(2) adding an acid leveling agent TBW-95 at 38 ℃, and adding the prepared dye at the speed of 20L/min;
(3) starting at 38 ℃, heating to 60 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(4) after the heat preservation is finished, cooling to 38 ℃ at the speed of 3.0 ℃/min, and then adding glacial acetic acid solution C03 at the speed of 20L/min;
(5) after the glacial acetic acid solution is added, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(6) after the heat preservation is finished, the temperature is reduced to 80 ℃ at the speed of 3.0 ℃/min, and after the dyeing is finished, the dyed textile (the full nylon lace fabric with the folded yarn) is obtained, and the color matching is carried out in a shearing mode.
Comparative example 2
This comparative example provides a dyeing process comprising the steps of:
(1) putting a textile to be dyed (a full nylon lace fabric with folded yarns) into a dyeing device;
(2) adding an acid leveling agent TBW-95 at 38 ℃, and adding the prepared dye at the speed of 20L/min;
(3) adding glacial acetic acid solution C03 at 38 deg.C and 20L/min;
(4) after the glacial acetic acid solution is added, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 45 min;
(5) after the heat preservation is finished, the temperature is reduced to 80 ℃ at the speed of 3.0 ℃/min, and after the dyeing is finished, the dyed textile (the full nylon lace fabric with the folded yarn) is obtained, and the color matching is carried out in a shearing mode.
Comparative example 3
This comparative example provides a dyeing process comprising the steps of:
(1) putting a textile to be dyed (a full nylon lace fabric with folded yarns) into a dyeing device;
(2) adding an acid leveling agent TBW-95 at 38 ℃, and adding the prepared dye at the speed of 20L/min;
(3) adding glacial acetic acid solution C03 at 38 deg.C and 20L/min;
(4) after the glacial acetic acid solution is added, heating to 98 ℃ at the speed of 1.2 ℃/min, preserving the temperature for 45min, obtaining the dyed textile (the full-nylon lace fabric with the folded yarn) after dyeing is finished, and shearing and contrasting.
Comparative example 4
This comparative example provides a dyeing process comprising the steps of:
(1) putting a textile to be dyed (a full nylon lace fabric with folded yarns) into a dyeing device;
(2) adding an acid leveling agent TBW-95 at 38 ℃, and adding the prepared dye at the speed of 20L/min;
(3) adding glacial acetic acid solution C03 at a speed of 20L/min at 38 deg.C, and maintaining the temperature for 20 min;
(4) after the heat preservation is finished, heating to 98 ℃ at the speed of 1.2 ℃/min, preserving the heat for 45min, obtaining the dyed textile (the full nylon lace fabric with the folded yarn) after dyeing is finished, and shearing and contrasting.
Experimental example examination of the Strand dye Permeability Effect of dyed textile
In the present example, the fabrics dyed in example 1 and comparative examples 1 to 4 were cut and subjected to color matching, respectively, to evaluate the dye-through effect of the yarn. The dye-through effects of the folded yarns of the example 1 and the comparative examples 1 to 4 are shown in table 2, and the comparison results are average levels of the dye-through effects of three different batches of dyed fabrics after sample shearing and color matching.
TABLE 2 table of the effect of dye-through of the strands of example 1 and comparative examples 1 to 4
As can be seen from the dye-through effect of Table 2, by adopting the post acid-supplementing dyeing method provided by the invention, the internal fibers of the plied yarns can absorb enough dye, the color of the internal fibers is consistent with that of the external fibers of the plied yarns, and the white spots and white spots on the cloth surface can not appear after the fabric is tentered and shaped, so that the problem that the white spots and white spots can appear when the lace fabric plied yarns are not dyed can be effectively solved.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein or by using equivalent structures or equivalent processes performed in the present specification, and are included in the scope of the present invention.
Claims (10)
1. The post acid-supplementing dyeing method is characterized by comprising the following steps:
(1) putting the textile to be dyed into a dyeing device;
(2) adding a leveling agent at the temperature of 35-40 ℃, and adding a dye at the speed of 18-22L/min;
(3) starting at 35-40 ℃, heating to 90-100 ℃ at the speed of 1.0-1.5 ℃/min, and preserving heat for 15-20 min;
(4) after the heat preservation is finished, cooling to 38-45 ℃ at the speed of 2.0-4.0 ℃/min, and then adding a glacial acetic acid solution at the speed of 18-22L/min;
(5) after the glacial acetic acid solution is added, heating to 98-100 ℃ at the speed of 1.0-1.5 ℃/min, and keeping the temperature for 15-20 min;
(6) and after the heat preservation is finished, cooling to 70-80 ℃ at the speed of 2.0-4.0 ℃/min, and finishing the dyeing.
2. The post-acid-replenishing dyeing method according to claim 1, characterized by comprising the following steps:
(1) putting the textile to be dyed into a dyeing device;
(2) adding a leveling agent at 38 ℃, and adding a dye at the speed of 20L/min;
(3) starting at 38 ℃, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(4) after the heat preservation is finished, cooling to 38 ℃ at the speed of 3.0 ℃/min, and then adding glacial acetic acid solution at the speed of 20L/min;
(5) after the glacial acetic acid solution is added, heating to 98 ℃ at the speed of 1.2 ℃/min, and keeping the temperature for 20 min;
(6) and after the heat preservation is finished, cooling to 80 ℃ at the speed of 3.0 ℃/min, and finishing the dyeing.
3. The post acid-replenishing dyeing method according to claim 1, wherein in the step (1), the textile to be dyed is lace fabric with a strand or lace ready-made clothes with a strand.
4. The post acid-replenishing dyeing method according to claim 3, wherein the material of the textile to be dyed comprises nylon.
5. The post-acid-replenishing dyeing method according to claim 1, wherein in step (2), the leveling agent is Ensley chemical acidic leveling agent DK-250 or Texas chemical acidic leveling agent TBW-95.
6. The post acid-replenishing dyeing method according to claim 1, wherein in the step (2), the amount of the leveling agent added is 0.5 to 1.5 g/L.
7. The post-acid-replenishing dyeing method according to claim 1, wherein in the step (2), the dye is an acid dye.
8. The post acid-replenishing dyeing method according to claim 1, characterized in that in the step (2), the dye is added in an amount of 1-5% by mass of the textile to be dyed.
9. The post-acid-replenishing dyeing method according to claim 1, wherein in the step (4), the glacial acetic acid solution is glacial acetic acid and water is added according to a ratio of 1: 10, and the adding amount of the glacial acetic acid solution is 0.75-1.5 g/L.
10. A dyed textile dyed by the post-acid-replenishing dyeing method of any one of claims 1 to 9.
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